What's a Costco Barn?
OK, so what is a Costco Barn?
A Costco Barn (aka Costco Carport, Costco Canopy, or Costco Shelter) is a temporary/portable canopy of steel poles and white tarp fabric. I'm guessing these were once cheaply available from Costco. As far as I can tell, the term Costco Barn seems to have been originated by Burners in the Seattle area.
Costco Barns cover an area of about 10 x 20 feet. Height is 6½' at the sides, 9' at the center. There are many slight variations on this theme, and the parts tend to not be interchangeable. Costco Barns can cost as little as $200. Amazon.com sells separately the poles & roof and sides.
Four people can assemble one of these in less than an hour.
Costco Barns stand up well at Burning Man if properly guyed down with trucker straps and rebar stakes. Otherwise, the sides can become giant sails in heavy winds. It's not pretty when Costco Barns uproot and roll through camp smashing other tents and their occupants.